Abstract
The experimental nuclear level density below the neutron binding energy B n in the mass region 40 ≤ A ≤ 200 is approximated to a high precision on the basis of the Strutinsky model combined with the assumption that the coefficient of collective enhancement of the level density for a given number of excited quasiparticles decreases exponentially with increasing excitation energy. This combination of model concepts makes it possible to reproduce faithfully not only the general trend revealed by the method developed at the Joint Institute for Nuclear Research (JINR, Dubna) in the change in the level density with increasing excitation energy in any nuclei but also the fine structure of this level density. Realistic experimental information about the change in the relationship between the densities of quasiparticle- and vibrational-type states was obtained for the first time for any nuclei virtually up to the neutron binding energy B n .
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Original Russian Text © A.M. Sukhovoj, V.A. Khitrov, 2010, published in Yadernaya Fizika, 2010, Vol. 73, No. 9, pp. 1554–1562.
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Sukhovoj, A.M., Khitrov, V.A. Precise model approximation of JINR (Dubna) data on nuclear level densities in the region 40 ≤ A ≤ 200 below B n . Phys. Atom. Nuclei 73, 1507–1515 (2010). https://doi.org/10.1134/S106377881009005X
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DOI: https://doi.org/10.1134/S106377881009005X